Today I will show you samll, but fast, powerful and free tool from mr the_laser (author of Setool2 box, Setool2 lite, A2 Tool also known as A2 Uploader) - S1 Tool, designed for all Sony Ericsson Xperia phones from QSD8250, MSM7227 and MSM8255 platforms.

As you can see, program is very simple. To identify your phone run s1tool.exe, press identify button, connect turned off phone holding back or volume down button and after a few seconds you will get identify output.

3. Flash.

Using S1Tool you can fast and easly reflash your Xperia smartphone. Supported phones and chipsets:

S1Tool supports both versions of firmware files. The first ones for flashtool with extension .ftf and original Sony Ericsson flash files for Setool2 with extension .sin_file_set. Firmware for Setool2 contains two parts: APP SW and FSP, so you must choose both files to reflash your smartphone.

Procedure is very simple:

1. Run s1tool.exe and press FLASH button.
2. Choose .ftf firmware or both Setool2 APPSW and FSP files. Hold ctrl on your keyboard to select more than one firmware package.
3. Connect turned off phone holding back or volume down button.

After a few minutes your phone is flashed and you can enjoy new firmware in your smartphone.

Flashing using .ftf files:

If you are getting error during flash using .ftf file, there is a simply solution for that. Of course you can use flashtool, but also you can convert .ftf file to .sin_file_set files. There is a simply way to do that:

1. Create new folder, open your .ftf file using winrar and copy all .sin files to your new folder:

4. Click on start (Windows) => run => cmd.exe, enter to your .zip files folder and rename them to .sin_file_set:

5. Flash your phone using created files:

Attention: If you do not want to loose user data after flash, you can open fsp firmware using winrar, delete from it userdataXXXXXXXXXXXXXXX.sin file and reflash your smartphone using procedure described above. If you want to downgrade your firmware for example from Android 4.0.4 Ice Cream Sandwich to 2.3.4 Gingerbread - I do not recommend to use that solution, because your phone will not be working properly. In that case reflash phone using original full APPSW and FSP files.

4. Relock bootloader.

If you have unlocked bootloader and want to relock it, press RESTORE button and connect turned off phone holding back or volume down button. If you are not sure if your bootloader is ulocked or not or you have no idea what bootloader is - do not touch that button.

I wish you a pleasant flashing of your Xperia phones and remember - everything you are doing on your own responsibility. If something gone wrong or you are still not sure how to flash your Xperia smartphone, you can choose our Online Service and your phone will be flashed or repaired with setool2 box. You can contact me using Skype chat: gen.jurij or private message.

Best Regards,

Jurij

Tutorial written for Sony.yt forum - copying to other websites is prohibited.

Hi there I know I am kinda of a hassle, but I don't actually want to revive old topics...
As you can see I do have a z1c, I searched around the forum and I found that this is the way to create APPSW and FSP files....
But I am stucked at this part which it is asking me to create APPSW, FSP, and ELABEL (I dont think this tutorial covers this yet since elabel is kinda for the new devices I guess?)
The part I am stuck at is the part about APPSW and FSP, I have 3 amss files, (amss_fs_1.sin, amss_fs_2.sin, amss_fsg.sin) I wonder which side should I put them in?
Do I put fs_1 and fs_2.sin into APPSW or something else?
Thanks!

thanks for the reply but it says unauthorized. I am having problem with this phone since I sent it to the shop to unlocked it is shows no sim cards regardless which network I used. Can you please help?

Some 2013 models are supported, but some newer only by paid version of Setool2. I can help you fix your phone online, but windows vista or newer, charged battery, usb cable, at least 2mbps internet speed and 15$ USD on your paypal account required to purchase Sony Xperia repair service. If you are interested, let me know on skype: gen.jurij and we will fix your phone.